That was fun. Was lucky to pick the right 2 groups to start with, so solved it in under 45 seconds and didn't appreciate the redherrings until afterwards. Had to stare at the Jeff Ridgeley line for a while, to see that last connection, but I got there in the end. Very nice, thank you!

Nice one, thanks. I could see the connections but couldn’t wade through the crossovers for two groups in time!

Thanks for the comments. Glad you liked the grid.